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AISI 201LN Stainless Steel vs. EN 1.7221 Steel

Both AISI 201LN stainless steel and EN 1.7221 steel are iron alloys. They have 73% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 201LN stainless steel and the bottom bar is EN 1.7221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
200 to 230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 25 to 51
11 to 17
Fatigue Strength, MPa 340 to 540
290 to 390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
650 to 780
Tensile Strength: Yield (Proof), MPa 350 to 770
430 to 630

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 880
420
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
44
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.4
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.5
Embodied Energy, MJ/kg 38
20
Embodied Water, L/kg 140
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230 to 310
83 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 1520
490 to 1050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 38
23 to 27
Strength to Weight: Bending, points 24 to 30
21 to 24
Thermal Diffusivity, mm2/s 4.0
12
Thermal Shock Resistance, points 16 to 23
19 to 23

Alloy Composition

Carbon (C), % 0 to 0.030
0.22 to 0.29
Chromium (Cr), % 16 to 17.5
0.8 to 1.2
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 67.9 to 73.5
96.8 to 98.3
Manganese (Mn), % 6.4 to 7.5
0.5 to 0.8
Molybdenum (Mo), % 0
0.15 to 0.3
Nickel (Ni), % 4.0 to 5.0
0
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030

Comparable Variants